Legal claims defining the scope of protection, as filed with the USPTO.
1. A method for preparing an electronic display of an electronic device to be turned off comprising: receiving at the electronic display an indication of an imminent electronic display reset signal from a power management unit, a processor, or some combination thereof indicating the electronic display will be powered off within a period of time; in response to the indication of an imminent electronic display reset signal, causing a frame of pixel data originating from the electronic display to be stored in pixels of the electronic display before the electronic display is powered off to inhibit image artifacts from occurring on the electronic display when the electronic display is powered back on in the future; outputting a feedback signal from the electronic display to a component of the electronic device after the frame of pixel data is stored in the pixels of the electronic display, wherein the feedback signal indicates that the electronic display may be powered down without a residual bias voltage on the pixels of the electronic display; and receiving an electronic display reset signal from the power management unit, the processor, or some combination thereof of an electronic display reset before the electronic display is forced off.
2. The method of claim 1 , wherein the frame of pixel data produces a voltage difference between pixel electrodes and common electrodes substantially equal to ground.
3. The method of claim 1 , wherein the frame of pixel data produces a voltage difference between pixel electrodes and common electrodes substantially equal to a darkest pixel value achieved during normal electronic display operation.
4. The method of claim 1 , wherein the electronic display is powered off after a sufficient time has elapsed for discharging power supplied to the electronic display.
5. An electronic display, comprising: a plurality of pixels; and display control circuitry configured to receive power from a power management unit external to the electronic display, to cause the plurality of pixels to be discharged after receiving an indication of an imminent reset signal of the electronic display from the power management unit, a processor, or some combination thereof, to send a feedback signal to the power management unit indicating that the plurality of pixels are discharged, and to receive an electronic display reset signal from the power management unit, the processor, or some combination thereof before the electronic display is forced off.
6. The electronic display of claim 5 , wherein the display control circuitry is configured to cause the plurality of pixels to be discharged substantially within a period of time associated with a refresh rate of the electronic display during normal operation.
7. An electronic device comprising: a power management unit configured to manage power of the electronic device; an electronic display configured, after receiving an indication of an imminent electronic display reset signal from the power management unit, the processor, or some combination thereof, to cause a frame of pixel data to be stored in pixels of the electronic display before power is removed from the electronic display by the power management unit, to inhibit image artifacts from occurring when the electronic display is powered on at a later time; and a processor configured to send image data to the electronic display; wherein the electronic display is configured to ignore the image data from the processor after receiving the indication of the imminent electronic display reset and to output a feedback signal to the power management unit indicating that the electronic display may be powered down without a residual bias voltage on the pixels of the electronic display; and wherein the power management unit is configured to power off the electronic display after sending an electronic display reset signal.
8. The electronic device of claim 7 , wherein the electronic display is configured to cause the frame of pixel data to be stored in pixels of the electronic display within approximately 16 ms when the electronic display normally operates at approximately 60 Hz.
9. The electronic device of claim 7 , wherein the electronic display is configured to receive an electronic display reset signal within substantially 36 ms after receiving the indication of the imminent electronic display reset.
10. The electronic device of claim 7 , wherein the power management unit is configured to power off the electronic display substantially within a period of time associated with discharging power supplied to the electronic display.
11. The electronic device of claim 7 , wherein the electronic display is configured to send a feedback signal to the power management unit after the frame of pixel data is stored in the pixels of the electronic display.
12. The electronic device of claim 11 , wherein the electronic display is configured to send the feedback signal substantially within a period of time associated with a refresh rate of the electronic display during normal operation.
13. The electronic device of claim 11 , wherein the electronic display is configured to receive an electronic display reset signal from the power management unit after sending the feedback signal.
14. A method comprising: causing a frame of pixel data to be stored in pixels of an electronic display after the electronic display receives an imminent electronic display reset signal indicating that the electronic display is about to be powered off, wherein the frame of pixel data originates from the electronic display; outputting a feedback signal from the electronic display after the frame of pixel data is stored in the pixels of the electronic display, wherein the feedback signal is output to a power management unit, a processor, or some combination thereof and wherein the feedback signal indicates that the electronic display may be powered down without a residual bias voltage on the pixels of the electronic display; and receiving an electronic display reset signal from the power management unit, the processor, or some combination thereof, after outputting the feedback signal, to power off the electronic display to limit image artifacts from occurring on the electronic display when the electronic display is powered back on at a later time.
15. An electronic device comprising: a power management unit configured to control power applied within the electronic device; a processor configured to control operation of the electronic device; and an electronic display configured to stop displaying image data and to discharge pixel data from pixels of the electronic display after receiving an indication that an imminent electronic display reset signal is about to occur, wherein the indication is received from the power management unit, the processor, or some combination thereof, wherein the electronic display is configured to output a feedback signal to the power management unit after the pixel data is discharged from the pixels of the electronic display, wherein the feedback signal indicates that the electronic display may be powered down without a residual bias voltage on the pixels of the electronic display; wherein the power management unit is configured to power off the electronic display after sending an electronic display reset signal.
16. The electronic device of claim 15 , wherein the indication that the electronic display reset is about to occur is received from the power management unit.
17. The electronic device of claim 15 , wherein the indication that the electronic display reset is about to occur is received from the processor.
Unknown
August 18, 2015
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